Design and Implementation of a High-Performance PMLSM Control System with Deadbeat Current Control and SMC

摘要

The direct-drive PMLSM control system for high-performance positioning systems requires the performance of high dynamic response and strong robustness.The high dynamic PMLSM servo system is satisfied using a digital deadbeat current controller and proposed sliding mode control (SMC).Considering the influence of hardware sampling time delay and inverter delay,the deadbeat current controller can adjust the current loop in 2 PWM cycles and enable the high-bandwidth current control.And based on the proposed SMC,the PMLSM position servo system can provide high dynamic performance and strong robust characteristics.The proposed SMC employs a uniformly asymptotic convergence of saturation function to eliminate the steady-state error and improve the accuracy of servo system.The results of simulation show that the direct-drive PMLSM control system with deadbeat current control and SMC method can acquire fast dynamic response and great robustness.